Steve Belvilus is the founder, band leader music composer of the New York City based band SUM. He completed a bachelor degree in music performance at The City college of New York after attending the Manhattan School of music in NY during his freshman and sophomore years.

He studied also classical music in Europe and graduated in high school in Literature and classical music in France. He also passed his DEUG I in musicology from Sorbonne University in Paris.

As far musical theater, Steve Belvilus. has subbed on broadway multiple times: Godspell on Broadway under Charlie Alterman, “Hamilton” on Broadway under Alex Lacamoire. He has performed as well at Radio City Music Hall for the New York Spectacular show Starring The Radio City Rockettes.

Steve Belvilus. holds also credits on albums which are on major record labels : Universal music Japan and Universal Music France and appeared several times on Fox 5 TV Channel and Bravo TV. He appears as well in "The Nobodies", a short film starring Jim Gaffigan (The Jim Gaffigan Show), Ellie Kemper (Bridemaids) and Jack Mcbrayer (Big Band Theory).

In addition to his performance credits, Steve Belvilus. conducts also master classes overseas and he is a part of the faculty at The Bronx House Performing Arts since 2010 and the drummer-percussionist at Calvary St George's Parish in New York City under the musical direction of Kamel Boutros.